11 Dederer St, Tappan, NY 10983 Property Records

Rockland County and Orangetown Town property record for 11 Dederer St, Tappan, NY 10983

Property Summary

Property Type	Duplex
Details	4 bd · 2 ba · 1,438 sqft · built 1929
Lot Size	0.139 acres (6,098 sqft)
Owner	Company Name on Record
Last Sale	$420,000 (Jan 2023)
Deeds & Mortgages	Jan 2023 Sale
Flood Zone	Zone X (minimal risk)
APN	`392489 74.20-3-57`

Property Details

APN / Parcel Number

Primary APN	`392489 74.20-3-57`
Alternative APNs	`248907402000030570000000` `0026738`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Stories	2 Stories
Building Area	1,438 sqft Total Area
1st Floor Area	838 sqft
2nd Floor Area	600 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1929
Architectural Style	Traditional
Exterior Material	Stucco
Lot Area	6,098 sqft (0.139 acres)
Garage Type	Detached
Garage Area	180 sqft
Porch	Enclosed Porch
Porch Area	100 sqft

Utilities, Heating & Cooling

Heating System	Hot Water
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Account Number	0026738
Old Parcel Number	248907402000030570000000
Street Address	11 DEDERER ST
City	TAPPAN
State	NY
Zip	10983-1711
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	RG
Legal Description	60/55/471/2
Legal Block	3
Legal Lot Number	57.000
Jurisdiction	ROCKLAND NY
Township / Civil Division	ORANGETOWN
Census Block Group	3
Census Block	3006
Census Tract	13402

Owner

Source: Rockland County and Orangetown Town records, as of February 14, 2024

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Company Name on Record
Mailing Address	30 WEST ST APT 8G, 8G, NEW YORK, NY 10004-3053
Owner Type	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jan 3, 2023 · Amount on Record
Deed Sale	Jan 3, 2023 · Amount on Record
Deed Document Number	0002023303
Deed Book / Page	2023 / 303
Record Updated	Jun 7, 2026

January 2023: Bargain and Sale Deed, Transfer

Document Type	Bargain and Sale Deed
Jurisdiction	ROCKLAND NY
Recording Date	Jan 3, 2023
Property Address	11 DEDERER ST, TAPPAN, NY 10983-1711
Document Number	0000000303
Map Reference	BK 20 PG 327
Instrument Date	Feb 9, 2022
Instrument	2023-00000303
Transaction Type	Transfer
Record Updated	Feb 15, 2023
Title Company	WESTCOR LAND TITLE INSURANCE COMPANY, WESTCOR LAND TITLE INS CO

Transaction

Amount	Amount Recorded
Tax	$1,680.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	326 PINES LAKE DR E, WAYNE, NJ 07470-5011

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	30 WEST ST APT 8G, 8G, NEW YORK, NY 10004-3053

Tax Assessment & Valuation

Source: Rockland County and Orangetown Town assessment roll, as of May 31, 2023

Property Jurisdictions

Type	Name
State	New York
County	Rockland County
County Subdivision	Orangetown Town
Unified School District	South Orangetown Central School District (PK - 12)

Tax Bill & Assessment History

Year	Assessed Value	Assessed Market Value
2023	$130,000 Land $29,500 Building $100,500	$364,861 Land $82,795 Building $282,066

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective August 19, 2025 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 19 policies
Nearby Flood Policies	19 in force
Nearby Flood Claims	33 (1979–2025)
Claims Outside the SFHA	12 of 33
Most Recent Claim	Jan 2025 · other causes
Claims by Event	Remnants Of Hurricane Ida, Sep 2021 · 12 claims Hurricane Irene, Aug 2011 · 4 claims Severe Storms And Inland And Coastal Flooding, Apr 2007 · 5 claims

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 80% of the US · above 54% of New York
Wildfire Likelihood	0.01% annual chance
Exposure	Direct burnable vegetation

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	VEOLIA WATER NEW YORK private · serves 270,000 people · EPA ID NY4303673
Water Source	Surface water
Last State Inspection	Mar 2023
Lead	3 ppb (2026) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 255 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Optimum Fiber · Cable	8,000 / 8,000
Verizon Fiber	980 / 880
T-Mobile Fixed Wireless	100 / 20